HID: logitech-dj: Fix error handling in logi_dj_recv_switch_to_dj_mode()

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[ Upstream commit 6f20d32612 ]

Presently, if a call to logi_dj_recv_send_report() fails, we do
not learn about the error until after sending short
HID_OUTPUT_REPORT with hid_hw_raw_request().
To handle this somewhat unlikely issue, return on error in
logi_dj_recv_send_report() (minding ugly sleep workaround) and
take into account the result of hid_hw_raw_request().

Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.

Fixes: 6a9ddc8978 ("HID: logitech-dj: enable notifications on connect/disconnect")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Link: https://lore.kernel.org/r/20230613101635.77820-1-n.zhandarovich@fintech.ru
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Nikita Zhandarovich 2023-06-13 03:16:35 -07:00 • committed by Greg Kroah-Hartman

parent cf38960386

commit 6e59609541

1 changed files with 4 additions and 1 deletions

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drivers/hid/hid-logitech-dj.c

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